^speaking of specs exeggutor I think it would be a great poke to build around. The thing rips in NU, but the low speed and it being kind of frail means it does require paralisys, hazard or even screen support.
Exeggutor @ Choice Specs
Trait: Chlorophyll
EVs: 4 HP / 252 SpA / 252 Spd
Nature: Modest / Timid
- Leaf Storm
- Psyshock
- Hidden Power Fire
- Sleep Powder
I also love the Torterra suggestion